You will find many different opinions. Personally, I'm a strong supporter for Amsoil. I use 5W-30 in both my Volvo & my Toyota 4Runner. I use the Amsoil Oil & Reusable Foam/Oil Airfilter as well.
A few others may chime in regarding Amsoil and its advantages. So a search and review what others have said. Also, review the Amsoil Web Site.
The longest that I have run on a single oil change is 19,000 miles over 1 year in my 96 4Runner. I changed the oil filter at 6mths. In the end, I had the oil analyzed and it was still within usable limits for continued usage.
This is only my 2 cents.
Andrew T. Watson
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